.page-contact {
  --ct-line: var(--ink-700);
  --ct-soft: rgba(31, 43, 68, .55);
  --ct-lime-glow: rgba(198, 255, 61, .16);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-contact .ct-crumb-wrap {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */

.page-contact .ct-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(24px, 4vw, 46px) 0 clamp(32px, 5vw, 60px);
  background-image:
    linear-gradient(to right, var(--ct-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ct-soft) 1px, transparent 1px);
  background-size: 76px 76px;
  background-position: -1px -1px;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-hero::after {
  content: "";
  position: absolute;
  right: -18%;
  top: -40%;
  width: 58%;
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle, var(--ct-lime-glow), transparent 68%);
  pointer-events: none;
}

.page-contact .ct-hero-inner {
  position: relative;
  z-index: 1;
}

.page-contact .ct-kicker {
  display: inline-block;
  margin: 0 0 18px;
  color: var(--lime);
}

.page-contact .ct-title {
  margin: 0 0 18px;
  max-width: 16ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 68px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-contact .ct-lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 章节通用 ---------- */

.page-contact .ct-section {
  padding: clamp(44px, 7vw, 88px) 0 0;
}

.page-contact .ct-head {
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-contact .ct-head h2 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.15;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .ct-sub {
  max-width: 68ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 三条通道 ---------- */

.page-contact .ct-channels {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: start;
}

.page-contact .ct-channel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  padding: 26px 22px 24px;
  background: var(--ink-800);
  border: 1px solid var(--ct-line);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}

.page-contact .ct-channel:hover,
.page-contact .ct-channel:focus-within {
  border-color: var(--lime);
  transform: translateY(-2px);
}

.page-contact .ct-ch-num {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted-dim);
}

.page-contact .ct-ch-badge {
  align-self: flex-start;
}

.page-contact .ct-ch-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: -.01em;
  color: var(--text);
}

.page-contact .ct-ch-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .ct-ch-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-contact .ct-ch-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-soft);
}

.page-contact .ct-ch-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 1px;
  background: var(--muted-dim);
}

.page-contact .ct-ch-foot {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--ct-line);
  font-size: 13px;
  color: var(--text);
  word-break: break-all;
}

.page-contact .ct-ch-btn {
  align-self: flex-start;
  margin-top: 4px;
}

.page-contact .ct-channel--primary {
  background: var(--ink-850);
  border-color: var(--lime);
  box-shadow: inset 3px 0 0 0 var(--lime);
  padding-top: 32px;
}

.page-contact .ct-channel--primary .ct-ch-list li::before {
  background: var(--lime);
}

.page-contact .ct-channel--primary .ct-ch-desc {
  color: var(--text-soft);
}

.page-contact .ct-channel--phone .ct-ch-foot {
  color: var(--orange);
}

.page-contact .ct-band {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--ct-line);
  background: var(--ink-850);
}

/* ---------- 应答节奏 ---------- */

.page-contact .ct-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-contact .ct-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(to bottom, var(--lime-dim), var(--ct-line) 55%);
}

.page-contact .ct-tick {
  position: relative;
  padding-left: 30px;
}

.page-contact .ct-tick::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 11px;
  height: 11px;
  background: var(--ink-900);
  border: 2px solid var(--lime);
  transition: background-color .18s var(--ease);
}

.page-contact .ct-tick:last-child::before {
  border-color: var(--muted-dim);
}

.page-contact .ct-tick-time {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--lime);
}

.page-contact .ct-tick:last-child .ct-tick-time {
  color: var(--muted);
}

.page-contact .ct-tick-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  color: var(--text);
}

.page-contact .ct-tick-desc {
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作与纠错 ---------- */

.page-contact .ct-coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-contact .ct-coop {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 26px 22px 24px;
  background: var(--ink-800);
}

.page-contact .ct-coop-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  color: var(--text);
}

.page-contact .ct-coop-desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-contact .ct-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-contact .ct-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-soft);
}

.page-contact .ct-box {
  flex: none;
  margin-top: 4px;
  width: 13px;
  height: 13px;
  border: 1px solid var(--qinghai);
  background:
    linear-gradient(135deg, transparent 46%, var(--qinghai) 46%, var(--qinghai) 54%, transparent 54%);
}

.page-contact .ct-coop-link {
  margin-top: auto;
  padding-top: 14px;
  font-size: 14px;
  color: var(--lime);
}

/* ---------- 提问前准备 ---------- */

.page-contact .ct-prep-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
}

.page-contact .ct-prep-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 20px;
  counter-reset: prep;
}

.page-contact .ct-prep-list li {
  display: flex;
  gap: 14px;
  padding-top: 18px;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-prep-num {
  flex: none;
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--qinghai);
  padding-top: 3px;
}

.page-contact .ct-prep-list h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  color: var(--text);
}

.page-contact .ct-prep-list p {
  margin: 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .ct-reminder {
  padding: 26px 22px;
  background: var(--ink-850);
  border: 1px solid var(--ct-line);
  border-left: 3px solid var(--orange);
}

.page-contact .ct-reminder-label {
  display: block;
  margin: 0 0 14px;
  color: var(--orange);
}

.page-contact .ct-reminder-lead {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.5;
  color: var(--text);
}

.page-contact .ct-reminder-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-contact .ct-reminder-list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-contact .ct-reminder-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 6px;
  height: 6px;
  background: var(--orange);
}

/* ---------- 联系信息 ---------- */

.page-contact .ct-info-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: start;
}

.page-contact .ct-dl {
  margin: 0;
  border-top: 1px solid var(--ct-line);
}

.page-contact .ct-dl-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding: 14px 0;
  border-bottom: 1px solid var(--ct-line);
}

.page-contact .ct-dl-row dt {
  flex: none;
  min-width: 76px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--muted-dim);
}

.page-contact .ct-dl-row dd {
  margin: 0;
  font-size: 15px;
  color: var(--text);
  word-break: break-all;
}

.page-contact .ct-note {
  display: block;
  margin: 16px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.page-contact .ct-map {
  border: 1px solid var(--ct-line);
  background: var(--ink-850);
}

.page-contact .ct-map::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--ct-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ct-soft) 1px, transparent 1px);
  background-size: 40px 40px;
  mix-blend-mode: screen;
  pointer-events: none;
}

.page-contact .ct-map {
  position: relative;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-contact .ct-channels {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .ct-channel {
    min-height: 300px;
  }

  .page-contact .ct-channel--primary {
    min-height: 400px;
  }

  .page-contact .ct-channel--phone {
    min-height: 250px;
    margin-top: 38px;
  }

  .page-contact .ct-coop-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-contact .ct-prep-grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-contact .ct-info-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
    gap: 36px;
  }
}

@media (min-width: 900px) {
  .page-contact .ct-timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    padding-top: 12px;
  }

  .page-contact .ct-timeline::before {
    left: 5px;
    right: 5px;
    top: 5px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(to right, var(--lime-dim), var(--ct-line) 62%);
  }

  .page-contact .ct-tick {
    padding-left: 0;
    padding-top: 26px;
  }

  .page-contact .ct-tick::before {
    top: 0;
    left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .ct-channel {
    transition: none;
  }

  .page-contact .ct-channel:hover,
  .page-contact .ct-channel:focus-within {
    transform: none;
  }
}